BROOKHAVEN, Ga. - Brookhaven police believe they have busted a massive credit card fraud operation, but police still fear there may be more victims.

Brookhaven investigators told Channel 2 investigative reporter Mark Winne that they know of three dozen cases of credit card fraud related to a business but say there could be more customers who are victims.

Winne was the only reporter on the scene Thursday as officers raided the Emissions Express on Chamblee-Dunwoody Road.

Investigators executed a search warrant at the business as part of a growing investigation into whether something else was coming out of the business besides emissions certificates -- namely credit card fraud.

“Investigators believe they may have three to four dozen victims that they’ve identified. There's a potential that there’s other victims from this business that were here as customers,” said Lt. Brandon Gurley, of the Brookhaven Police Department.

Gurley said several people were detained but later released. He says no arrests were expected Thursday, but Brookhaven investigators expect to sort through records seized at the emissions testing center as they work on building a case.

“You're not saying the owner or any employees necessarily have done anything wrong?” Winne asked Gurley.

Gurley said Department of Natural Resources officers came to the scene to assist police. He said state DNR oversees the emissions testing process because of its environmental impact.

Gurley said Brookhaven police are looking for help from someplace else -- the public -- as detectives attempt to gauge how many victims there may be of credit card fraud.

“They’re asking anyone that has done business here at Emissions Express to pay attention to their bank records and their credit card records; (see) if they notice any fraudulent activity,” Gurley said.

If you believe you may have been a victim of fraud somehow after visiting Emissions Express, call the Brookhaven Police Department at 404-637-0600.